--- service: j.root-servers.net start-period: '2015-09-15T00:00:00Z' end-period: '2015-09-15T23:59:59Z' metric: traffic-volume dns-udp-queries-received-ipv4: 4900302997 dns-udp-queries-received-ipv6: 300181674 dns-tcp-queries-received-ipv4: 70708260 dns-tcp-queries-received-ipv6: 24166277 dns-udp-responses-sent-ipv4: 3818714370 dns-udp-responses-sent-ipv6: 299164716 dns-tcp-responses-sent-ipv4: 68438746 dns-tcp-responses-sent-ipv6: 22317513